The equation of motion phonon method and its application in the neutron rich oxygen region

0499263 - ÚJF 2019 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
De Gregorio, G. - Knapp, F. - Lo Iudice, N. - Veselý, Petr
The equation of motion phonon method and its application in the neutron rich oxygen region.
EPJ Web of conferences. Vol. 194. Les Ulis: EDP Sciences, 2018, č. článku 01003. ISSN 2101-6275.
[2018 International Conference on Nuclear Structure and Related Topics (NSRT 2018). Burgas (BG), 03.06.2018-09.06.2018]
Grant CEP: GA ČR GA13-07117S
Institucionální podpora: RVO:61389005
Klíčová slova: 22O * calculations * cross section
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

An equation of motion phonon method, developed for even-even nuclear systems and extended to odd nuclei, is applied to 22O and to its odd neighbors 23O and 23F. A calculation using the chiral potential NNLOopt is carried out in a space encompassing up to two phonons. The computed dipole cross section in 22O and the spectra of 22O and 23O are in a satisfactory agreement with the experimental data. However, the calculation describes poorly the spectrum of 23F. This discrepancy originates from the strong coupling between the odd proton and the 22O phonons of neutron nature. This coupling pushes down in energy several states enhancing the level density at low energy. We suggest that a viable route for the solution of this problem could be the inclusion of the three-body interaction using the new chiral potential NNLOsat.
Trvalý link: http://hdl.handle.net/11104/0291491